39a16da2d712ad437d54abefb2691987b376d4c6d6835e82517201610a043182

Analysis

max time kernel
143s
max time network
165s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01/12/2022, 05:42

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General

Target

39a16da2d712ad437d54abefb2691987b376d4c6d6835e82517201610a043182.dll
Size

236KB
MD5

1ed281624d11a3bf5c7a7179199ed730
SHA1

5dfa541a6f314c34e713d203446627ec58e01651
SHA256

39a16da2d712ad437d54abefb2691987b376d4c6d6835e82517201610a043182
SHA512

d87f79c7bb028116cb5e1479e4dac3348c474cc2a9a4e5537d5f1af2dbbb6144f44a78fe141dd1048125a47b92314cda9e7b80440b960fadaa092ba40324e78b
SSDEEP

1536:Iguo2K86vta10RJQYPIHL+D5IWhxRh/Ci4ucg3/+k5ltr+DRPG8Gz7wk+cQvMU:Go256vS0RJAL+lHPKi40+66iwkD0r

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\sugmo = "{8ee40a84-066c-5bb1-177d-066c820c6a3b}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
964	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\npbhj.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\npbhj.dll	rundll32.exe
File created	C:\Windows\SysWOW64\fhtzb.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\fhtzb.dll	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8ee40a84-066c-5bb1-177d-066c820c6a3b}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8ee40a84-066c-5bb1-177d-066c820c6a3b}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8ee40a84-066c-5bb1-177d-066c820c6a3b}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8ee40a84-066c-5bb1-177d-066c820c6a3b}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8ee40a84-066c-5bb1-177d-066c820c6a3b}\InprocServer32\ = "C:\\Windows\\SysWow64\\npbhj.dll"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
964	rundll32.exe
964	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	964	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
964	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1912 wrote to memory of 964	1912	rundll32.exe	79
PID 1912 wrote to memory of 964	1912	rundll32.exe	79
PID 1912 wrote to memory of 964	1912	rundll32.exe	79

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\39a16da2d712ad437d54abefb2691987b376d4c6d6835e82517201610a043182.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1912
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\39a16da2d712ad437d54abefb2691987b376d4c6d6835e82517201610a043182.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Loads dropped DLL
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:964

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\fhtzb.dll

Filesize
478KB

MD5
e99416267b61f52fa5ab994019efd359

SHA1
86d31eae707db7fe51d2556394fcf0e8e9f6b0fd

SHA256
768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774

SHA512
0a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae

Download Submit
memory/964-134-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/964-135-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download